JP6396385B2 - Display device, inspection method, and inspection program - Google Patents

Description

  The present invention relates to a display device having a touch panel, a touch panel inspection method, and an inspection program.

  Conventionally, a touch panel is used as an input device provided to be superimposed on a display (display unit). For touch panels, various detection methods such as a resistive film method, a capacitance method, and an ultrasonic method are known. For example, the resistive film method has a long history and continues to be used a lot because of its low cost. The resistive film type touch panel is arranged so that two substrates (glass or film) with transparent electrodes face each other, and the substrates come into contact with each other by pressing the touch panel. The circuit on the substrate operates by contact between the substrates, and coordinates are detected.

  In such various touch panels, it is desired to accurately recognize the user's touch operation. For this reason, for example, Patent Document 1 proposes a technique for detecting an unintended input to the touch panel and inspecting the touch panel for an abnormality when the software is activated when the power is turned on. Patent Document 2 proposes a method of suppressing deterioration of the touch panel by moving a button to a coordinate with a small number of pressings in the sensitive area.

JP 2009-176162 A JP 2007-72536 A

In the touch panel, for example, in the above-described resistive film method, the resistance value of the substrate changes depending on aging or use environment, and the sensitivity of the touch panel is lowered. Similarly, with respect to other detection methods, the sensitivity decreases due to aging or use environment and the deterioration of the touch panel progresses.
Such a touch panel is often used in a numerical controller (CNC) incorporated in a machine tool. For the operator of the numerical control device, a decrease in the sensitivity of the touch panel greatly affects the operability and decreases the production efficiency. For this reason, it is desired that the deterioration state of the touch panel can be detected in advance before the operation of the operator is hindered.

  An object of the present invention is to provide a display device, an inspection method, and an inspection program capable of detecting the degree of deterioration for each area of a touch panel.

  A display device (for example, a numerical control device 1 described later) according to the present invention includes a detection unit (for example, a detection unit 111 described later) that detects a touch position on a display unit (for example, a display 701 described later) at a predetermined cycle. A setting unit (for example, a setting unit 112 described later) that sets an expected value of the number of times of detection by the detection unit according to the moving speed of the touch position for each of the small areas into which the display unit is divided; and the detection unit By comparing the number of times of detection with one or more threshold values based on the expected value, a determination unit (for example, a determination unit 113 described later) that determines the deterioration degree of the small region, and an output that outputs the deterioration degree A unit (for example, an output unit 114 described later).

  The display device may include a guide unit (for example, a guide unit 115 described later) that performs a guide display for touching the small areas in a predetermined sequence.

  The guide unit may perform display for moving the small area at a predetermined constant speed.

  The display device may include a calculation unit (for example, a calculation unit 116 to be described later) that calculates the moving speed based on the touch position and time interval detected continuously.

  The output unit may display the small area by color according to the degree of deterioration based on a determination result by the determination unit.

  The inspection method according to the present invention includes a detection step of detecting a touch position on the display unit at a predetermined cycle, and detection by the detection unit according to a moving speed of the touch position for each of the small areas into which the display unit is divided. A setting step of setting an expected value of the number of times, a determination step of determining the degree of deterioration of the small region by comparing the number of times of detection by the detection step with one or more threshold values based on the expected value, and the deterioration The computer executes an output step of outputting the degree.

  The inspection program according to the present invention includes a detection step of detecting a touch position on the display unit at a predetermined cycle, and detection by the detection unit according to a moving speed of the touch position for each of the small areas into which the display unit is divided. A setting step of setting an expected value of the number of times, a determination step of determining the degree of deterioration of the small region by comparing the number of times of detection by the detection step with one or more threshold values based on the expected value, and the deterioration And causing the computer to execute an output step of outputting the degree.

  According to the present invention, the degree of deterioration for each area of the touch panel is detected.

It is a block diagram which shows the hardware constitutions of the principal part of a numerical control apparatus. It is a block diagram which shows the function structure of CPU in a numerical control apparatus. It is a figure which illustrates the small area of a display. It is a figure which illustrates the threshold value and display color of a detection frequency. It is a figure which shows the example of a screen display in the inspection method of a touch panel. It is a flowchart which shows the process of CPU. It is a figure which illustrates the variation of a guide display. It is a figure which shows the example of a screen display when there is no guide display.

Hereinafter, an example of an embodiment of the present invention will be described.
In the present embodiment, the numerical control device 1 is exemplified, but the display device is not limited to this, and refers to the entire information processing device (computer) having a touch panel superimposed on a display (display unit). The display device includes, for example, a server, a PC, a mobile terminal, a game machine, a home appliance, a navigation device, various control devices, and the like.

FIG. 1 is a block diagram illustrating a hardware configuration of a main part of the numerical controller 1.
In the numerical controller 1, the CPU 11 is a processor that controls the entire numerical controller 1. The CPU 11 reads a system program stored in the ROM 12 via the bus 20 and controls the entire numerical controller 1 according to this system program.
The RAM 13 stores temporary calculation data, display data, and various data input by the operator via the display / MDI unit 70. Since access to the RAM is generally faster than access to the ROM, the CPU 11 expands the system program stored in the ROM 12 on the RAM 13 in advance, reads the system program from the RAM 13 and executes it. Also good.
The nonvolatile memory 14 is a magnetic storage device, a flash memory, an MRAM, an FRAM (registered trademark), an EEPROM, an SRAM or a DRAM backed up by a battery, and the storage state is maintained even when the power of the numerical controller 1 is turned off. It is configured as a non-volatile memory to be held. The nonvolatile memory 14 stores a machining program or the like input via the interface 15, the display / MDI unit 70, or the communication unit 27.

Various system programs for executing processing in an edit mode and processing for automatic operation required for creating and editing a machining program are written in the ROM 12 in advance.
Various machining programs are input via the interface 15, the display / MDI unit 70, or the communication unit 27 and stored in the nonvolatile memory 14.
The interface 15 connects the numerical control device 1 and the external device 72. From the external device 72, the machining program and various parameters are read into the numerical controller 1. Further, the machining program edited in the numerical control device 1 can be stored in the external storage means via the external device 72. Specific examples of the interface 15 include RS232C, USB, SATA, PC card slot, CF card slot, SD card slot, Ethernet (registered trademark), Wi-Fi, and the like. The interface 15 may reside on the display / MDI unit 70. Examples of the external device 72 include a computer, a USB memory, a CFast, a CF card, and an SD card.

A PMC (Programmable Machine Controller) 16 outputs a signal to an auxiliary device (for example, an automatic tool changer) of a machine tool via an I / O unit 17 according to a sequence program built in the numerical controller 1. Further, the PMC 16 receives signals from various switches of the operation panel 71 provided in the machine tool body, performs necessary signal processing, and then passes the signals to the CPU 11. The PMC 16 is also generally called a PLC (Programmable Logic Controller).
The operation panel 71 is connected to the PMC 16. The operation panel 71 may include a manual pulse generator or the like.
The display / MDI unit 70 is a manual data input device including a display 701 (display unit) and an operation unit such as a keyboard or a touch panel 702. In addition to sending display screen data to the display 701 of the display / MDI unit 70, the interface 18 receives commands and data from the operation unit of the display / MDI unit 70 and passes them to the CPU 11.

The axis control circuits 30 to 34 for each axis receive the movement command amount for each axis from the CPU 11 and output the command for each axis to the servo amplifiers 40 to 44.
In response to this command, the servo amplifiers 40 to 44 drive the servo motors 50 to 54 of the respective axes. The servo motors 50 to 54 for each axis incorporate position and speed detectors, and feed back position and speed feedback signals to the axis control circuits 30 to 34 to perform position and speed feedback control.

The spindle control circuit 60 receives a spindle rotation command to the machine tool and outputs a spindle speed signal to the spindle amplifier 61. Upon receiving this spindle speed signal, the spindle amplifier 61 rotates the spindle motor 62 of the machine tool at the commanded rotational speed to drive the tool.
A pulse encoder 63 is coupled to the spindle motor 62 by a gear or a belt, and the pulse encoder 63 outputs a feedback pulse in synchronization with the rotation of the main shaft. The feedback pulse is read by the CPU 11 via the bus 20. .

FIG. 2 is a block diagram showing a functional configuration of the CPU 11 in the numerical controller 1.
The CPU 11 includes a detection unit 111, a setting unit 112, a determination unit 113, an output unit 114, a guide unit 115, and a calculation unit 116.
Each of these functional units is realized by the CPU 11 executing a system program stored in the ROM 12.

  The detection unit 111 detects a touch position (coordinates) on the touch panel 702 superimposed on the display 701 at a predetermined cycle.

The setting unit 112 sets an expected value of the number of detections by the detection unit 111 according to the moving speed of the touch position for each of the small areas into which the display 701 is divided.
For example, when the touch position is detected by the detection unit 111 at a fixed frequency of 3000 Hz, when one small area is continuously touched for 0.1 seconds, the expected value of the number of detections by the touch panel 702 without deterioration is 300 times. It is. As the touch panel 702 deteriorates, the number of detections becomes smaller than this expected value.

FIG. 3 is a diagram illustrating a small area of the display 701.
In the display / MDI unit 70, the display 701 on which the touch panel 702 is superimposed is divided into a plurality of small areas A in a matrix (lattice) shape, for example. The numerical controller 1 may display this matrix on the display 701 and accept a size designation input.
Note that the shape of the small region is not limited to a square, and may be a rectangle or other polygons, but it is desirable to cover a region that can be detected by the touch panel 702.

  The determination unit 113 determines the level of deterioration level of the small region by comparing the number of detections by the detection unit 111 for each small region with one or more threshold values based on the expected value set by the setting unit 112.

The output unit 114 outputs the degree of deterioration for each small area of the touch panel 702 determined by the determination unit 113.
At this time, the output unit 114 notifies the operator of the degree of deterioration for each small region by displaying each small region in a color-coded manner according to the level of the degree of deterioration based on the determination result by the determination unit 113.

FIG. 4 is a diagram illustrating the threshold value of the number of detections and the display color.
For example, when the touch position is detected by the detection unit 111 with a fixed period of 3000 Hz, when each small area is continuously touched in order of 0.1 seconds, the expected value “300” of the number of detections in each small area For “times”, the thresholds are set to “200 times” and “100 times”.
In this example, the number of detections “201 to 300 times” is assigned a blue color indicating that there is no or little deterioration, and the number of detections decreases to “101 to 200 times” or “0 to 100 times”. Yellow or red is assigned depending on the degree of deterioration.

  Here, one or a plurality of threshold values based on the expected value can be set, and the setting unit 112 may accept the threshold value as a fixed value or may set it at a predetermined ratio with respect to the expected value.

The guide unit 115 performs guide display for touching the small areas in a continuous predetermined order.
At this time, the guide unit 115 performs display for moving the small area at a predetermined constant speed. For example, the guide unit 115 moves a figure or the like serving as a guide at a speed of 10 frames / second, so that the operator continues to touch each small area sequentially for 0.1 second along the guide display.

FIG. 5 is a diagram illustrating a screen display example in the inspection method of the touch panel 702.
The inspection of the touch panel 702 is started when the operator touches the start position (for example, the small area in the upper left corner) on the matrix-displayed screen (FIG. 3).

When the inspection is started, a screen (a) is displayed in which an arrow guide G that sequentially indicates each small area of the matrix is extended. The operator traces the touch panel 702 along the guide display.
When the degree of deterioration is determined for each small area, a screen (b) in which each small area is painted in a predetermined color is displayed. In this example, it is shown that the small area Y (yellow) is deteriorated and the small area R (red) is further deteriorated. The other small region B (blue) is a region that does not hinder use because there is no or little deterioration.

The calculation unit 116 calculates the moving speed of the touch position based on the touch position and the time interval continuously detected by the detection unit 111.
When the moving speed of the touch position is controlled by the guide unit 115, it is not necessary to calculate the moving speed by the calculating unit 116. However, when an arbitrary touch operation by the operator is allowed, the movement calculated by the calculating unit 116 is used. The speed is provided to the setting unit 112, and an expected value for each small area corresponding to the moving speed is set.

FIG. 6 is a flowchart showing the processing of the CPU 11 in the touch panel 702 inspection method.
This process is executed when the operator touches the start position of the inspection.

  In step S <b> 1, the CPU 11 (detection unit 111) sets the number of touch detections in a small area including the detected touch position to 1.

  In step S <b> 2, the CPU 11 determines whether or not the inspection period (for example, a period during which guide display is performed by the guide unit 115) has ended. If this determination is YES, the process ends. If the determination is NO, the process moves to step S3.

  In step S <b> 3, the CPU 11 (detection unit 111) tries to detect the touch position at a predetermined cycle, and determines whether the position has been detected. If this determination is YES, the process proceeds to step S4, and if the determination is NO, the process proceeds to step S2.

  In step S4, the CPU 11 (detection unit 111) determines whether or not the detected position is in the same small area as the previous time. If this determination is YES, the process proceeds to step S5, and if the determination is NO, the process proceeds to step S6.

  In step S5, the CPU 11 (detection unit 111) counts up the number of touch detections in the small area whose position has been detected. Thereafter, the process proceeds to step S2.

  In step S <b> 6, the CPU 11 (determination unit 113) determines the degree of deterioration of the touch panel based on the number of detections in a small area where the touch position has moved and the count has ended.

  In step S <b> 7, the CPU 11 (output unit 114) performs color-coded output on the corresponding small area of the display 701 according to the determined degree of deterioration. Thereafter, the process proceeds to step S1.

Note that this processing flow is an example, and the procedure for determining the degree of deterioration based on the number of detections for each small area is not limited to this.
On the assumption that the touch operation by the operator follows the guide display, the number of detections for each small area may be divided and counted at a predetermined time interval (for example, 0.1 second).

In addition, the guide display is not limited to the shape and order shown in FIG. 5 as long as it is a display method that moves all the small areas, and various forms can be adopted.
FIG. 7 is a diagram illustrating a variation of the guide display.
The guide display may be moved spirally from the outside to the inside of the display 701 or from the inside to the outside, for example (a).
Further, the start position of the guide display is not limited to the upper left, and may be started from another position such as the upper right (b).

Further, the numerical control device 1 sets the expected value of the number of detections for each small area based on the moving speed calculated by the calculation unit 116 even when there is no guide display, and the touch panel 702 is deteriorated. Degree can be determined.
FIG. 8 is a diagram showing a screen display example when there is no guide display.
The display color of the small area whose deterioration degree has been inspected is changed along the trajectory of the touch operation by the operator. The operator can inspect the entire touch panel 702 by tracing the area where the display color is in the initial state.

According to the present embodiment, the numerical control apparatus 1 sets an expected value of the number of detections corresponding to the movement speed of the operator's touch position for each of the small areas into which the display 701 is divided, and sets the number of detections to the expected value. By comparing with the threshold value based on, the degree of deterioration of the touch panel 702 for each small region is output.
Therefore, the numerical control device 1 can detect the degree of deterioration for each area of the touch panel 702 by an operator's touch operation in advance before the operation of the touch panel 702 is hindered. As a result, for example, it is possible to take measures such as adjusting the display position of the application icon so that the degraded portion of the touch panel 702 is not used.

Further, the numerical control apparatus 1 can efficiently inspect the entire touch panel 702 by performing a guide display for allowing an operator to touch a plurality of small areas in a predetermined sequence.
At this time, the numerical control apparatus 1 can fix the expected value of the number of detections for each small region by moving the guide display at a constant speed, so that the processing efficiency is improved.

  Further, the numerical controller 1 can calculate the moving speed based on the detected touch position and time interval, and can set an expected value of the number of detections for each small area. Thereby, the numerical control apparatus 1 can increase the freedom degree of the touch operation at the time of an inspection, and can make an operator's operation procedure easy.

In addition, since the numerical control device 1 displays the determination result of the deterioration degree by color for each small area, the operator can easily grasp the deterioration area and the deterioration level of the touch panel 702.
Furthermore, the operator can grasp the transition of deterioration of the touch panel 702 by using this inspection method periodically. Accordingly, it is possible to estimate the replacement time of the touch panel 702. At this time, it is desirable that the level of deterioration degree is set finely.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. Further, the effects described in the present embodiment are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the present embodiment.

The color classification indicating the degree of deterioration of the touch panel 702 may be displayed as a result after the determination of all areas is completed, or may be displayed at a timing determined for each small area.
There may be no display (matrix display) indicating the boundaries of the small regions.
The start position of the inspection may be a specified position (for example, the upper left corner) or a position where the operator first touched. In this case, the guide unit 115 sets a guide display route that covers the entirety based on the start position.

  The inspection method of the touch panel 702 by the numerical control device 1 is realized by software. When realized by software, a program constituting the software is installed in a computer (numerical control device 1). Further, these programs may be recorded on a removable medium and distributed to the user, or may be distributed by being downloaded to the user's computer via a network.

1 Numerical control device (display device)
11 CPU
DESCRIPTION OF SYMBOLS 111 Detection part 112 Setting part 113 Determination part 114 Output part 115 Guide part 116 Calculation part 701 Display (display part)
702 touch panel

Claims (7)

A detection unit for detecting a touch position on the display unit at a predetermined cycle;
For each small region into which the display unit is divided, a setting unit that sets an expected value of the number of detections by the detection unit according to the moving speed of the touch position;
A determination unit that determines the degree of deterioration of the small region by comparing the number of detections by the detection unit with one or more threshold values based on the expected value;
An output unit that outputs the degree of deterioration.   The display device according to claim 1, further comprising a guide unit that performs a guide display for touching the small regions in a predetermined sequence.   The display device according to claim 2, wherein the guide unit performs display for moving the small region at a predetermined constant speed.   4. The display device according to claim 1, further comprising a calculation unit that calculates the moving speed based on the touch position and time interval detected continuously. 5.   The display device according to any one of claims 1 to 4, wherein the output unit displays the small areas in different colors according to the degree of deterioration based on a determination result by the determination unit. A detection step of detecting a touch position on the display unit at a predetermined period;
A setting step for setting an expected value of the number of times of detection by the detection unit according to a moving speed of the touch position for each of the small areas into which the display unit is divided;
A determination step of determining the degree of deterioration of the small region by comparing the number of detections in the detection step with one or more threshold values based on the expected value;
An inspection method in which a computer executes an output step of outputting the degree of deterioration. A detection step of detecting a touch position on the display unit at a predetermined period;
A setting step for setting an expected value of the number of times of detection by the detection unit according to a moving speed of the touch position for each of the small areas into which the display unit is divided;
A determination step of determining the degree of deterioration of the small region by comparing the number of detections in the detection step with one or more threshold values based on the expected value;
An inspection program for causing a computer to execute an output step of outputting the degree of deterioration.

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